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January, 01/29/2015
Events and times subject to change

January 29, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Alessandra Lanzara
UC Berkeley

Switching Quantum Materials Properties with Light

The recent advancements in laser technology have dramatically expanded the applications of lasers to table top experiments in condensed matter physics. Femtosecond time-resolved spectroscopy techniques are emerging tools in the study of quantum materials, offering new paths to disentangle coexisting phases with similar energy scale, selectively tune a specific phase across a quantum critical point and create hidden states that do not exist in equilibrium, to name a few.
In this talk I will present some of our recent work where ultrafast light is used to manipulate electron charges, spin and lattice to reveal underlying properties in quantum materials, to drive metal insulator transition, to destroy superconductivity and to control spin texture in topological insulators. Future direction in the field will be discussed.


February 2, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



February 4, 2015 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Yitzhak Rabin
Bar Ilan University

TBD



February 4, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Frederik Denef
Columbia University

TBA



February 5, 2015 Thursday 11:00 AM  +
Meyer 721
Hard Condensed Matter Seminars (hcmp)


Mark Hoefer
University of Colorado, Boulder

Particle and Wave Dynamics of Magnetic Droplet Solitons

Droplet solitons are a strongly nonlinear, inherently dynamic wave structure in the magnetization of ferromagnets balancing dispersion (exchange energy) with focusing nonlinearity (strong perpendicular anisotropy). Their recent observation by multiple groups using nanocontact-spin torque oscillators (NC-STOs) motivates a detailed analysis of droplet dynamics in realistic physical environments. One useful approach is to treat the droplet as a moving, precessing, dipolar particle. Soliton perturbation theory is used to describe the action of a number of important physical effects on droplets, e.g., damping, forcing via spin torque, and inhomogeneous magnetic fields. The wave nature of droplets becomes important, for example, when they interact with each other or with a ferromagnetic boundary. Exhaustive micromagnetic simulations are used to classify droplet scattering. These coherent structures provide a new tool by which magnetic materials could be interrogated or used as information carriers.


February 5, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


John Johnson

TBA



February 6, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Jonathan Katz
Washington University

Fast Radio Bursts

Fast Radio Bursts were discovered by Thornton, et al. (2013), and possibly earlier by Lorimer, et al. (2007), in the Parkes Multibeam Pulsar Survey at high Galactic latitude. They show classic pulsar-like pulse dispersion that, if attributed to intergalactic plasma, indicates cosmological distances and extremely high (~10^{37}K) brightness temperatures that can only be explained as the result of coherent emission. The degree of charge clumping required implies relativistic potentials. The de-dispersed pulses of two FRB are broadened to several ms with a frequency dependence that indicates scattering along the paths between source and observer. The scattering cannot be attributed to the general intergalactic medium and appears to have taken place close to the sources. I will discuss implications for the origins and distances of FRB and their astronomical environments, and consider the possibility that FRB are local interference rather than an astronomical phenomenon.


February 9, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



February 11, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Albion Lawrence
Brandeis

TBA



February 11, 2015 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Andrew Leifer
Princeton University

Whole-brain Functional Imaging in Freely Behaving Nematodes

How does a nervous system control an animal’s behavior? We are investigating this question by manipulating and monitoring neural activity of populations of neurons in the brain of a simple transparent organism and correlating the observed neural dynamics with behavior. I will present a suite of optical tools to control and record activity in the nematode C. elegans as it moves, including the first instrument to perform whole-brain calcium imaging with cellular resolution in an awake and unrestrained behaving animal. We have used these techniques to gain insight into the underlying neural mechanisms behind mechanosensation, forward locomotion, and the C. elegans escape response. These measurements are a critical first step for investigating neural coding of behavior, decision-making and the time evolution of internal brain states.


February 12, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Vincenzo Vitelli
Leiden

TBA



February 13, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Kendrick Smith
Perimeter Institute



February 16, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



February 18, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Andy Royston
Texas A&M

TBA



February 18, 2015 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Shy Shoham
Technion University

Distributed Neuro-physical Interfaces: Technology and ‘Exciting’ Biophysics

In addition to the widely-used ability to selectively target specific cell types, Optogenetics and other emerging strategies for remote neural stimulation also offer an exciting path towards spatio-temporally-controlled targeting. For example, projected patterns of light can be used to selectively and flexibly control and image activity patterns distributed across entire populations of neurons.
The talk will present an overview of our recent work on distributed neuronal interfacing with large populations of neurons using optical and acoustic wavefront shaping approaches. Our results demonstrate that patterned computer-generated holographic optical neural stimulation (HONS) can achieve millisecond temporal precision and cellular resolution in simultaneously controlling populations of retinal ganglion cells and is shown as a promising path towards in a next generation retinal prosthesis. Next, we examine the challenges of interfacing with 3D networks, where bioengineered brain-like ‘optonets’ and hybrid optical solutions combining laser-scanning and temporal focusing two-photon microscopy are shown to provide powerful tools for large area population-wide imaging and stimulation. I will conclude by discussing the emerging model-based Neural Intramembrane Cavitation Excitation (NICE) framework for elucidating the physical basis of neuro-acoustic excitation and some "exciting" insights it provides into this emerging technology for three-dimensional noninvasive neuromodulation.


February 20, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Adam Leroy
NRAO / Ohio State University



February 23, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



February 25, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Alexander Zhiboedov
Harvard

TBA



February 26, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Vicky Kaspi
McGill University

TBA



February 27, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Beth Willman
Haverford College



March 2, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



March 4, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Adam Peterson
University of Minnesota

TBA



March 5, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


John Condeelis
Albert Einstein Cancer Center

TBA



March 6, 2015 Friday 11:00 AM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

Informal Astro Talk
Nanda Rea
Univ. of Amsterdam

Magnetars



March 6, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Matthew Turk
NCSA



March 9, 2015 Monday 11:00 AM  +
Meyer 5th Fl. CCPP Lounge
Experimental Particle Physics Seminars (hep-ex)


Daniel Whiteson
UC Irvine

The CrayFis Smartphone Cosmic-Ray Project



March 9, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



March 11, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Adam Martin
Notre Dame

TBA



March 12, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Joe Lykken

TBA



March 13, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Tea Temim
University of Maryland College Park

Supernovae as Drivers of Dust Evolution in Galaxies

The understanding of interstellar dust is important in many areas of astrophysics, but its nature, origin, and evolution are still poorly understood. The presence of dust in galaxies has a profound effect on their spectral appearance and on the many processes that determine the physical, chemical, and thermal state of the interstellar medium (ISM). Dust is primarily formed in the ejecta of core collapse supernovae (SNe) and mass outflows of evolved stars, and then subsequently destroyed by SN shocks expanding into the surrounding ISM. I will present the recent progress on the study of SN-formed dust in supernova remnants (SNRs), including recent observations of Cas A, SN 1987A, and the Crab Nebula that revealed significant masses of cold dust, as well as new estimates of global dust destruction rates by SNRs in the Magellanic Clouds. I will discuss the balance between dust formation and destruction by SNe and its implications for dust evolution models and our understanding of the origin of interstellar dust in galaxies.


March 16, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



March 23, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



March 25, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Spencer Chang
University of Oregon

tba



March 26, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Jerome Bibette
EPSCI

TBA



March 27, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Neil Gehrels
Goddard Space Flight Center

Adventures in Time Domain Astronomy

The X-ray and gamma-ray sky is more dynamic than in other wavelength bands. Gamma-ray bursts, supernovae, and black hole accretors all are characterized by bursts and flares. We are in a rich period of time domain astronomy with Swift, and Fermi operating. The X-ray through high energy gamma-ray skies are being monitored on hourly to daily time scales at sensitivities more than an order of magnitude better than ever before. Highlights will be presented of the exciting and often surprising results about our highly variable universe.


March 30, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



April 1, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Kfir Blum
IAS

TBA



April 3, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Adam Peterson
University of Minnesota

TBA



April 3, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Alan Calder
Stony Brook



April 6, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



April 8, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Ami Katz
Boston University

TBA



April 9, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Mikhail Lukin
Harvard University

TBA



April 10, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Nikhil Padmanabhan
Yale University



April 13, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



April 15, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


James Stokes
UPenn

The curious case of large-N expansions on a (pseudo)sphere



April 15, 2015 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Edward Lyman
University of Delaware

TBA



April 16, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Gabriel Kotliar

TBA



April 17, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Phil Marshall
Stanford



April 20, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



April 22, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Tony Gherghetta
University of Minnesota

TBA



April 24, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Daan Meerburg
CITA



April 27, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



April 29, 2015 Wednesday 10:00 AM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

PhD defense
Daniel Foreman-Mackey
NYU

Exoplanets TBA



April 29, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Sean Carroll
Caltech

tba



April 30, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Marc Kamionkowksi

TBA



May 1, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Sarbani Basu
Yale University



May 4, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



May 6, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Daniel Harlow
Princeton

TBA



May 7, 2015 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Ivan Schuller

TBA



May 8, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Erik Tollerud
Yale University



May 11, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



May 13, 2015 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Kristan Jensen
Stony Brook

TBA



May 15, 2015 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Katherine Deck
Caltech

exoplanet dynamics TBD



May 18, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



May 25, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



June 1, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



June 8, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



June 15, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



June 22, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



June 29, 2015 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag